Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba771b178b0e096fbc402c0c6a674196d6ca1666492038c2632a82b4e3d196f8' 
  AND token = 'tfdCgt7fHigmkXTFMOqHh2/S0aDjUJMyXBWMQB93cbU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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