SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '70beb95f638b442abf827a4200f2038e54536f6a94a84dd37212d3917b62117d' 
  AND token = 'zVhZ24hNksuDLC/cfcvt9Ab77XK+q9laLny8OD5Avg0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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