Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1f1737934537b71dbd9f792cee743206bb9a934a393df7ab140da9a81eb63199' 
  AND token = 'drY35FfbNGn7MWkNaxagFxFp/GrlA3Jz5ce7F+xrEFg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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