Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35c1b9ab2de6980b1fa8ce062428a9d87451f587fa368fea41a385e5eb334050' 
  AND token = 'v3snDDsY8dbYxF8Af6mTp5s462OOtozXNRK4KxTV188=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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