Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8da5d52f1602efdce0e467ad7b2a02bfb99ede8edc775ef783b60fe1a1557aeb' 
  AND token = '5NDf0+0x+IpUrBo3ZEiywNhs4SMo1av5aMVGzGccbLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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