Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e067672b4e74aa6ecdfedd02ab0a97782e59c7859d531b89a372b1ab2c206ed3' 
  AND token = 'y/tM9vFfwTE1TtFceTY0gECDpaZQJXB9nH+58p8UQ8M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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