Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e970f718025960c4a95d6a9d6efa00caf288fbe808d46a3b99c2080bbc020a6b' 
  AND token = 'ZPrf56jZrw4qxs1kF7TVWrswyiwFjvORqUOZK9NrWzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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