Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b22c22abbe1c38230e67648e24f1a21705f1246db117db078b5d49018e41287a' 
  AND token = 'U7WhKTAnF/r8Av76NlCREGhOvX3c6aiGf7aXLIuTKNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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