Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9622a2ac1c69494a5961f19ef3fec5e1b63280ccd2657f93cdbc370ab88ea19f' 
  AND token = 'auzuYJbLD/y46hWA9A+NQiMctuuqA6XeYM8+qY1Qn0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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