Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '778d1cffce42c774acc9441497e9723dd11a8c3fddeb4b310d578c070a008621' 
  AND token = 'WJ6cKN/hPLw03gAa0BLi7A9lcfFTJTPlT35wp2xXzno=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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