Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09bafabc407765414dcdd4244aa795f8439d4198be3ef71a398a1fb833ce6663' 
  AND token = 'FXMmTenmDBv9Jwk3uKERnFlSJAkPPl4DrsOTc18xuRo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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