Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de9296f8ecb483afe21db452ae74bcab1c8831447db624500cb14c9d7bb883ff' 
  AND token = 'ogxCmaXTGTOMlfoBzNoTcPTqNGpM6u6Xw3OXIbmA7Us=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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