Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '45549ad76447d8eeeae12315706dcf50ed77f2c0bb469be5e83a338ce6e93912' 
  AND token = '3EAYU8347oSr7HGe2wkO83Snx1uy80teoHeBPFBjSxs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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