Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'acdc432f209061501d02f464714656c6f67fd305b3479663acfacd00bb79e77f' 
  AND token = 'kUARXR8SHFAZN0pZKICbJ37wbxEP5DPpRMoBlU7C9g4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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