Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd8b48e6dbfd44739590c1734c3408168162cb54fd1dd699ab371d7d127cdc64b' 
  AND token = 'ieIiRXEu1psXkVb2hLkZPJ8nlMKLUaWuZZjInuzVAY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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