Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '45edb857fe947d130c5aa23e4608c509ff89830a90b5f8192c56486733058e39' 
  AND token = 'xjxERQWkU/BeozPIRnjQpzzJ1+4bQO0kd9BNNBP42mw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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