SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '02bf7441a94ec5f892264b3d8f33713ced230b19f2f4557ad9f41ac9b70d7f07' 
  AND token = 'iTLBACxjQTepS+DEz4KIRHu8jsoq+L5AmYfNy1FtXq0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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