Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a7cd8c9d6e1c60180f6e109041b94e77ef712e01b665a094f1c6be08aa88c7d1' 
  AND token = 'iEXA8apA1D82Qxz8k8oVHIGb0Is4oBP32yhcaoBKNGk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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