Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97364569677f475de72133424ed46fb6c9cb4ed0e60eca1bc0ed68fb5e45eb6a' 
  AND token = 'tDav4RiJJWpxSy8oOU1dbs4Xz1TMAmJsGJjtngCgxC8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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