Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c1dde5f82fc2977def5b8a956a4990287eb4ac72005c2d96c962d8384169934' 
  AND token = 'xcFScHp1iG1+FNdbrU9fTdL3qp2pEeY4VrE1G9dTTW0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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