Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e605c66f6ee0f3b0bacd8ea937ce0cf9b5f513ab8e97215e01c757eaf19b9751' 
  AND token = 'uTSFADDDiufoX23UbGSdD4M5cjCPKcK/jVozQxnCT9Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}