Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd3ada89c83358abcf48ad97065360bc5747b5de08b0987be984e6bf1d251fd24' 
  AND token = 'Wj27bJwqBWnCpd5ZMhJfCHGiPUhOitIxtmFNaqTeQ2Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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