SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bba6c42dbbb2c7f99b3b6616c8cb11bf5b8ff8a3ab1176af59cee384df660070' 
  AND token = 'GZ/FqEXiQor/t9qx/IZ20WAiKi5MvYBYhJaKEMTdmZg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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