Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '96358917e76e2d79963195b7a1e150ea33cca932904fa2e34ff3eb745ba79b1c' 
  AND token = 'X3kGMrB2RVmUHPTmFojSAve09pUZ3w2PHNLpQhnvhHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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