Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a9f4f27c6834a542511aa3b03c212bc57f39510450f46fb6ea09e8cc1d4e3b0' 
  AND token = 'tR03v6Kyk82v4/ayhIE5oSLhqqzOWZakTYJVpsiYreQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00064

JSON explain

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