Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '08a86c4ea893408f90f2b867f7f5202fa54fb5d1454ef565844b59063afeaff8' 
  AND token = 'NaPuufKkn5aklP0anJ7BII1pPlrhvGuv0a1crWfpUJU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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