Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de603b50fe0ef1e8c70f740527dabf792444a48f01dffb7fa7237541f2209223' 
  AND token = 'GArG88Y+rZuz26oJZ2Dy7DRmV5TZjYlIaoOvuZB889M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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