Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '43de273748be32ca817ee6e44e361b02f716e68ec47e2aa196edceab7d078e3c' 
  AND token = 'ZQcpm6R/9STPAg31uc/DYBYGEyuAwWAfujHD2tluKb4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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