Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e62025d46b20210f9d026535cf628a50b25737271ec7325b7382e7b1db111e7d' 
  AND token = 'PBL2KhmE1aNQLsaaS44+yjZTeAzvAAE4H2E32D11cHE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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