Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b970d3c3161891f2989a34123cac80cc8888fec7f2c27fb58088a7146442fb08' 
  AND token = 'A/oJGoOVOm1t4+2CsNXV7ke2JQF5qAI2Z6cZZSTOILc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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