Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '84f4c8cc7863930d44daffd6c7edfa2c8dec5c1fab56f9cb3693463b858d3981' 
  AND token = '55kQEZ6porxDKIESb5cP5iuKYfTUITbm+V2Ps8RlPLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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