Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7268065f4787038a68cfe8d816084f945fd58faa7797673643cab9a1b0f92f4c' 
  AND token = '2haSVQxTMNNpWE1pKNFnzY2wPYByTmQsfCb+wpr9Yuk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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