Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e2ff4182cee98c185084c533f57ed32a157f73ba46379cd5e1c29d0ac526e83' 
  AND token = 'rMpoNsqKxeNN2x9+EcXyCUPIb8ks/rahMiRz8+ULOi8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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