Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a9d7c3508df7abae20ba715df0dedcd10a07c8a9eb57972c8e1149a88be4c04' 
  AND token = 'NvotMHhWbF/s96Cs3w3tuvKRWTO3/4+h4iN8I54+T4U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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