Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d3f8332bc2d9f2199c33898d5b4e26fc4d1078c344cde08edfab6f91d36789f' 
  AND token = 'kY3/e4TvHll64yt9xYRsxNEB+wzgnfJkM0ATNLH0+6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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