Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ad1997211d67eaf93275276c47cc4c3ae12ec208bb08b0ac3b30618f9045c11f' 
  AND token = 'weqpNQH6fdapp3gPvHHyb0jnCR9G6vouTgFMD13lh1o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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