Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96469724d6e6b2d9e8c0bae944e6dfbd137b9a6798f7a764824a64fd980c348b' 
  AND token = 'hqA20focZbqqU6TPWfRtaFQqj4BSim+2rs5JxOYyreg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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