Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd482f53d65a11af3fa77187f50acf0bef1a6e31503bd4da15f28813cb4953cda' 
  AND token = 'pFPyIzipPMtm7R6EQYaI4T73YRkCCGNEhRyilWHyMvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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