Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfaa882a739a122110762d0619efea91c87ff1e2416b617c96d44abf7c118362' 
  AND token = 'NUPayLA4VlkWluPEqbgqKEF3zEWs76G6QGJdo8ll3Wo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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