Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'cb48736004bdb96a4020c11882960674e9305534f279f914bcc7f81cd5c316ee' 
  AND token = 'CFS63e/xsMfa3FfhLLNhrC4Vlyv0NqkvWeGKyW/qwN4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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