Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c94c301a614eb69fcc777fd4582248c744a095b8540e6619095f453e9e33cb74' 
  AND token = 'LVt7nTDDsGDgaU7tn6joa8Nr9TXrJ2cSWG6ToezOtc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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