Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66b2720d8eddc29b1b6e2ff852996486ed14d791d3e04e8b82c2ef43b23cd8e4' 
  AND token = '+IxddBTvxubLyywSxOA7ovpVB8krCM6At4tLBgoaj+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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