Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd0d29f66be2135f6dbb2a09e5925a7d87091eb192b44a65423e33d74f66d069f' 
  AND token = '+ukyOQ/pwbLVrc0qXJsub9ctFgzefIvtbjvMiFSq0Vc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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