Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c83f4b766284de77c7997e3194fb7e70c7ec02e32ece907bdc7534a16b2c7c97' 
  AND token = '1WhWuMXprzV71PDvi1D/unrf92j9WLSWo32B/dA/G90=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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