Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2980456d4d0a5e3a4a1fda0c766f71f02ff8b319d6d3294c8e60aaf6aa587c3' 
  AND token = '5oNT8riOmEy1qqFv87aqqExETihrs2XDhBPf3LngC0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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