Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88962b97d5de8ddda2d26ba98ccd813fd9e4f6cc4e930799a295b91c8c56a1a5' 
  AND token = 'y4gXkxprYZJoQwbWVSlysJVPK66gBZo5SSR8dovgJxY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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