SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce3e6361167a896538889bb812731decfe44d73ba0075824b35fb9ade635464d' 
  AND token = 'FOU1qLQ+4vko33jaeqP8gZ4qB2vEVMnpm/59xRqzhx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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