Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c06c7959299e377b0df29b41ff0fed6309b26aa07906ee2a672bf9c825d0370f' 
  AND token = 'U1XNCEliH6XrAAS3zYEaN/vPGTMpSP+4YtgaXh09/iE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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