Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '32be7def5d0dfd5b25452a6b078770f520b28e98625e31a1c576afa38b8255c9' 
  AND token = 'FDCytzjDFA91xdFz9Mjqz1QgxY16vPxJEsuTjy2yBbk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}