Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9e7484c6b10c82e5f9b99743ec35767b1bca39f107b9741326b4b85a166836db' 
  AND token = 'R7gcMCzfw0MRHeHn5Q9BxHqpgFMMPJ9p9DXL736aZEA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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