Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a101659fb773dc43319249e63946e78c5371d218ad65ec8fb05123854342afd' 
  AND token = 'g6+nEnm2ohpHfMvfFe2HmM5SMAjvOi6+1Fc6ip0rlOY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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