Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8463d37478b565f3df5af7d8886b2a3d45392d08929b4e0b8dc5a4a5c9eda127' 
  AND token = 'PlOeSvfubsUCSDSkMR2cn2JzpTgNrr4VfzsZvo3WGvw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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