Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35c06cb4c5da685d4137d1bd0b0522b75b13073a4635e406b072f1a81f6c7a8b' 
  AND token = 'bksAi2OuKdYrELTyT42U4+KPbmu89+F7+2X8vN9sSRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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