Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1e4d03e691164bc6b964bcd7dcf952be902e2cbcc3e4f986307c63ae6189d5f5' 
  AND token = 'AX/SrJHoAoMemK6/rk8lqPACbBC+wXvsM0b5uMWog7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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