Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '06d5d1e0745d35eece8aa8ea1a5d3413d4ba29376d3a0e34b79948917e2a2dde' 
  AND token = 'Gz5taoNLxMGzTx5m8VEp/AViipT5970MGLoIlbkIIoc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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