Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04aadedd6ce32fec3ed9ef33163497ab2ed9cc203c022665de1ff94c0899f8c3' 
  AND token = 'SqvSorIxkKYU6p2URIye+NYrnvgZJIWKyJZTtTIsV6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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