Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '910cb178100062d1eca7fbf587a77506256b2eceac98f13cedf47736f10bfd6c' 
  AND token = 'S23FYOHX2pJM77c5yC+EDC26QnXw0/g0YcFmK9vbKGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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