Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed801c2f0c93b49e1841bcc778ec27d7f603952055979494d20e3d73c55d3649' 
  AND token = 'g2cxxnx4913Ge4bLE34xXhAA0pc5K/XvRcDCSd1RVac=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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