Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fdb4fe67729459859d0900b372ce5cad94b280d242dd33ad2b021368bd13898a' 
  AND token = 'i41/UDmSUBK+n6UsduodmHHH4rKzWdDAm84roht0Xvo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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