Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'edc6600513d8da17bf362f0542f6c206799865b7cc9a63cd928e5edfc6461607' 
  AND token = 'uGkFVKwGXrSaJMOb7Aar4gtQ6Zp68W771K0UJmzABug=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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