Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e11265467fc8c20ceb9cb664e65f94967c384cb7da7f9a39bc09341a65a4a8f1' 
  AND token = 'R1cP6JBldTZE2pV3gVVXTuyoXgPyftrsX9vGzNwpRU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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