SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11ee28a9fc1126f20faf5bb958a086b1c01e16a5df4130ddbffc8eef57452ad8' 
  AND token = 'Y20w5xNnntZnsPtxlJp9H0yrSKHbXZ4/ABtVCjXgg30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

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