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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6562e3e28c918aef67cc67f52e2f334d37809eb32a0e0f6643df432ba48409bf' 
  AND token = 'GPP34c0wcKXEsbNHQVEYlh4RUu4OGMLBAuOPbOu3UJ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE								Impossible WHERE noticed after reading const tables