SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70cc4dad9216edf3133c49b5726f54e10ddd147513b5750498ce8c34de434638' 
  AND token = 'E/v6Hsp4fgG+K5pfJRFokqiA0f4o1t5DOLE9y1qLM5o=' 
  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