Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '905a4c157ab8ce0afe42c31c7f68bc9fd7d3eaf25bab27d3299ab1681f5d0719' 
  AND token = 'dhvx123qVrxQ2fn8XnLEODf95TT67urLAhx51d/2qB8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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