Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '320d1dbbd020070546db33c227c952026814c8c9b8f93d4459e152879567aa5d' 
  AND token = 'q5j2vI+wo84em3tyE5SIATWLdUvJHzGvJd7ebzE0ZQw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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